noun
infiltration
ihn-fihl-TRAY-shuhn
noun
1
The act of secretly entering an organization, group, or place.
"The report detailed the spy's infiltration of the ministry over several years."
2
The gradual seeping of a liquid into a material or the ground.
"Poor infiltration of water into the soil led to flash flooding."
How to Use Infiltration
Learner’s notesIn plain EnglishSecretly getting inside something, or a liquid slowly soaking through a material.
Common pairings
infiltration of the market
water infiltration
enemy infiltration
Word Forms
infiltrations plural
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The report detailed the spy's _____ of the ministry over several years.
Etymology
From Medieval Latin infiltratio, built on infiltrate.